| Index | Delaware | Ohio | National |
| Average Test Scores | 75% | 61% | 48% |
| Student/Teacher ratio | 13:1 | 17:1 | 16:1 |
| Total public schools | 17 | 3,650 | 79,221 |
| Total private schools | 2 | 1,000 | 24,874 |
| Total post-secondary schools | 3 | 393 | 7,963 |
| Index | Delaware | Ohio | National |
| Completed 8th grade | 90.3% | 86.9% | 84.3% |
| Completed high school | 89.6% | 85.6% | 83.0% |
| Completed some college | 63.6% | 55.7% | 59.4% |
| Completed associate degree | 40.6% | 35.1% | 38.5% |
| Completed bachelors | 34.3% | 26.7% | 30.3% |
| Completed masters | 13.3% | 10.0% | 11.5% |
| Completed professional degree | 3.0% | 2.7% | 3.3% |
| Completed doctorate | 1.7% | 1.1% | 1.3% |
There are a total of 17 public schools, 2 private schools and 3 post-secondary schools in Delaware. Using the proficiency score averages, the average test scores for Delaware, OH schools is 75%. The average student to teacher ratio is 13:1. In Delaware, OH, an average of 90.3% of students have completed 8th grade and an average of 89.6% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Ostrander, OH | 904 | 92% | 91.7% |
| Galena, OH | 753 | 89% | 85.9% |
| Powell, OH | 13,353 | 88% | 82.9% |
| New Albany, OH | 11,085 | 87% | 81.3% |
| Dublin, OH | 47,824 | 81% | 68.7% |
| Delaware, OH | 41,818 | 75% | 55.2% |
| City | Population | Avg. Test Scores | National Avg. |
| Spring Hill, TN | 41,797 | 52% | 7.8% |
| Apache Junction, AZ | 41,863 | 35% | 27.3% |
| Bell Gardens, CA | 41,770 | 30% | 37.4% |
| Midland, MI | 41,922 | 54% | 12.7% |
| Puyallup, WA | 41,666 | 56% | 16.0% |
| Delaware, OH | 41,818 | 75% | 55.2% |
Here are the best places to live in Ohio
See the best places to live in Delaware
These are the 10 cheapest cities in Ohio
Check out the 10 most dangerous cities in Ohio